E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 31/107 (2006.01)
Patent
CA 2432074
Various embodiments of a downhole tool (10) with a telescoping conductor member are provided. In one aspect, a downhole tool (10) is provided that includes a housing (14) and a mandrel (12) telescopically positioned in the housing (14). The mandrel (12) and the housing (14) define a pressure compensated substantially sealed chamber (234) containing a volume of a non- conducting fluid. A conductor member (26) is positioned in the housing (14) for providing an electrically conducting pathway. The conductor member (26) has a first segment (28, 32) and a second segment (36). The first segment (28, 32) is moveable with the mandrel (12) and relative to the second segment (36). A portion of the conductor member (26) is electrically insulated from an ambient fluid by the non-conducting fluid. A first biasing member (38) is provided for maintaining a conducting pathway between the first segment (28, 32) and the second segment (36). The tool (10) provides for electrical transmission in a telescoping tool.
L'invention concerne plusieurs modes de réalisation d'un outil de forage (10) muni d'un élément conducteur télescopique. Dans un mode de réalisation, cet outil de forage (10) comprend un compartiment (14) ainsi qu'un mandrin (12) logés de manière télescopique dans le compartiment (14). Le mandrin (12) et le compartiment (14) définissent une chambre sensiblement hermétique à compensation de pression (234) contenant un volume donné d'un fluide non conducteur. Un élément conducteur (26) est logé dans le compartiment (14) de manière à former un passage électroconducteur. Cet élément conducteur (26) comprend un premier segment (28, 32) et un second segment (36). Le premier segment (28, 32) peut se déplacer avec le mandrin (12) par rapport au second segment (36). Une partie de l'élément conducteur (26) est isolée électriquement d'un fluide environnant par le fluide non conducteur. Un premier élément de polarisation (38) assure le maintien d'un passage conducteur entre le premier segment (28, 32) et le second segment (36). Cet outil (10) permet la réalisation d'une transmission électrique dans un outil télescopique.
Borden Ladner Gervais Llp
Evans Robert W.
LandOfFree
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